Someone help I can’t understand these lol

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

What is the definition of exponential decay?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%